- Gain
- 23.0k ft
- Gain / mile
- 230 ft
- High point
- 5.8k ft
- Cutoff
- 34 h
mountainforestrockytechnicalsingletrack
Editorial summary
23,000+ feet of gain, remote technical sections and the notorious late Cardiac Needles.
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100 Milers
The full-distance races, with cutoffs, crew rules and night running spelled out.
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Race characteristics
These come from what runners write about each race, not from an objective score. Each match shows how many experiences back it up.
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How runners describe the feel of the weekend, taken from reports and reviews. Not something the race claims about itself.
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How practical the race is to crew: course shape, what the driving is like and how long your runner is out of reach.
Best matches · 16 races
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Trail · 100 Mile · Multi-loop
2. Javelina Jundred 100 Mile
Fountain Hills, AZ · Oct 31, 2026 · Waitlist only
- Gain
- 6.3k ft
- Gain / mile
- 63 ft
- Cutoff
- 30 h
desertsingletrackrollingsandyrocky sections
Editorial summary
Javelina is not primarily difficult because of altitude or huge climbing. Desert heat and exposure can become the defining challenge, while the runnable terrain encourages aggressive early pacing.
Trail · 100 Mile · Out-and-back
3. Leadville Trail 100
Leadville, CO · Typically August · Registration opens soon
- Gain
- 13.4k ft
- Gain / mile
- 134 ft
- High point
- 12.6k ft
- Cutoff
- 30 h
mountainhigh altitudetraildirt roadrocky
Editorial summary
The raw climbing number understates Leadville because much of the race occurs near or above 10,000 feet. Hope Pass is the headline obstacle, but altitude affects virtually every section.
- Gain
- 11.7k ft
- Gain / mile
- 117 ft
- Cutoff
- 30 h
singletrackrockytechnical sectionsforestmountain
Editorial summary
Moderate climbing for a mountain 100, but rocky technical sections and overnight running add difficulty.
- Gain
- 6.3k ft
- Gain / mile
- 63 ft
- Cutoff
- 32 h
forestpinerootyrollingrunnable
Editorial summary
Moderate climbing makes the course look approachable, but root-heavy trail becomes increasingly difficult to manage after dark and deep into the race.
- Gain
- 20.0k ft
- Gain / mile
- 200 ft
- High point
- 10.3k ft
- Cutoff
- 36 h
mountainalpinerockyrunnable sectionstechnical sections
Editorial summary
Large cumulative climbing is compounded by prolonged running at high elevation. The trail is not uniformly technical, but altitude, long climbs, and potentially severe mountain weather substantially increase difficulty.
- Gain
- 20.3k ft
- Gain / mile
- 203 ft
- High point
- 8.9k ft
mountainforestrocky descentssingletrack
Editorial summary
More than 20,000 feet of climbing and varied descents at sustained mountain altitude.
- Gain
- 8.0k ft
- Gain / mile
- 80 ft
- Cutoff
- 30 h
rollingmulti use trailrunnableforest
Editorial summary
Runnable terrain shifts the challenge toward cumulative fatigue and disciplined pacing.
- Gain
- 24.0k ft
- Gain / mile
- 240 ft
- Cutoff
- 36 h
mountainscreerockyalpinetechnical
Editorial summary
About 24,000 feet of climbing plus technical mountain terrain and major day-to-night weather swings.
Trail · 100 Mile · Point-to-point
10. Western States 100
Auburn, CA · Jun 26, 2027 · Registration opens soon
- Gain
- 18.0k ft
- Gain / mile
- 180 ft
- High point
- 8.8k ft
- Cutoff
- 30 h
mountainalpinerockyforestcanyon
Editorial summary
Western States combines an aggressive opening climb and alpine running with long descending and often severe canyon heat. The roughly 23,000 feet of descent creates substantial cumulative quad damage.
mountainrockyexposedsingletracktechnical
Editorial summary
Technical terrain, heat exposure and sustained climbing make it a serious western 100.
mountainsingletrackrockyforestremote
Editorial summary
Long remote mountain sections, sustained climbing and exposure create a serious mountain 100.
desertfoothillsrollingrocky
Trail · 100 Mile · Loop
16. Tahoe Rim Trail 100 Mile
Carson City, NV · Jul 17, 2027 · Dates not announced
- Cutoff
- 36 h
mountainsingletrackrockyforesthigh altitude
Editorial summary
Sustained altitude, mountain climbing and technical trail over a full day-and-night effort.